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                        MXY整理版Python基础
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            <span><b>1.</b> Python的安装和简介</span>
            
            
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                        第一个Python程序
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            <span><b>2.</b> Python的基本语法</span>
            
            
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            <span><b>3.</b> Python的变量及数据类型</span>
            
            
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                            <b>3.1.</b>
                        
                        变量
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                        数据类型
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                            <b>3.3.</b>
                        
                        数据类型转换
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                            <b>3.4.</b>
                        
                        数据类型转换
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            <span><b>4.</b> Python的流程控制</span>
            
            
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                        顺序结构和分支结构
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                            <b>4.2.</b>
                        
                        循环结构
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            <span><b>5.</b> 函数及作用域</span>
            
            
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                            <b>5.1.</b>
                        
                        函数
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                            <b>5.2.</b>
                        
                        函数文档
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                            <b>5.3.</b>
                        
                        变量的作用域
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                        内部函数和闭包操作
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                        lambda表达式
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                            <b>5.6.</b>
                        
                        高阶函数
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            <span><b>6.</b> 内置函数及操作</span>
            
            
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                            <b>6.1.</b>
                        
                        字符串相关
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                            <b>6.2.</b>
                        
                        format格式字符串
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                            <b>6.3.</b>
                        
                        内建函数
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                            <b>6.4.</b>
                        
                        列表
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                            <b>6.5.</b>
                        
                        元组
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                            <b>6.6.</b>
                        
                        字典
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                            <b>6.7.</b>
                        
                        集合
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                            <b>6.8.</b>
                        
                        文件操作
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            <span><b>7.</b> 常用的模块</span>
            
            
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                            <b>7.1.</b>
                        
                        String模块
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                            <b>7.2.</b>
                        
                        math模块
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                            <b>7.3.</b>
                        
                        OS模块
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                            <b>7.4.</b>
                        
                        zipfile模块
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                            <b>7.5.</b>
                        
                        tarfile模块
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                            <b>7.6.</b>
                        
                        shutil模块
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                            <b>7.7.</b>
                        
                        时间相关模块
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        <li class="chapter " data-level="8" >
            
            <span><b>8.</b> 面向对象</span>
            
            
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                            <b>8.1.</b>
                        
                        类和对象-上
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                            <b>8.2.</b>
                        
                        类和对象-下
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                            <b>8.3.</b>
                        
                        魔术方法
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                            <b>8.4.</b>
                        
                        装饰器
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                            <b>8.5.</b>
                        
                        抽象类
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                            <b>8.6.</b>
                        
                        错误和异常处理
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                            <b>8.7.</b>
                        
                        模块和包
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        <li class="chapter " data-level="9" >
            
            <span><b>9.</b> tkinter模块</span>
            
            
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        <li class="chapter " data-level="9.1" data-path="home/9.tkinter模块/tkinter模块.html">
            
                
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                            <b>9.1.</b>
                        
                        tkinter模块
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        <li class="chapter " data-level="10" data-path="home/10.网络编程/1.网络编程.html">
            
                
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                            <b>10.</b>
                        
                        网络编程
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        <li class="chapter " data-level="10.1" data-path="home/10.网络编程/2.TCP编程.html">
            
                
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                            <b>10.1.</b>
                        
                        TCP编程
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        <li class="chapter " data-level="10.2" data-path="home/10.网络编程/3.UDP编程.html">
            
                
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                            <b>10.2.</b>
                        
                        UDP编程
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        <li class="chapter " data-level="11" data-path="home/11.多任务/多任务原理.html">
            
                
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                            <b>11.</b>
                        
                        多任务
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        <li class="chapter " data-level="11.1" data-path="home/11.多任务/1.多进程实现多任务.html">
            
                
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                            <b>11.1.</b>
                        
                        多进程实现多任务
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        <li class="chapter " data-level="11.2" data-path="home/11.多任务/2.多线程实现多任务.html">
            
                
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                            <b>11.2.</b>
                        
                        多线程实现多任务
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        <li class="chapter " data-level="11.3" data-path="home/11.多任务/3.协程实现多任务.html">
            
                
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                            <b>11.3.</b>
                        
                        协程实现多任务
                    </a>
            
            
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        <li class="chapter " data-level="12" >
            
            <span><b>12.</b> Python实战项目</span>
            
            
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        <li class="chapter " data-level="12.1" data-path="home/12.Python实战项目/1.简易计算器.html">
            
                
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                            <b>12.1.</b>
                        
                        简易计算器
                    </a>
            
            
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                            <b>12.2.</b>
                        
                        自动售货机
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                        银行项目
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                        简单的登录注册
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                        双色球
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                        python垃圾回收机制
                    </a>
            
            
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                            <b>12.7.</b>
                        
                        turtle画国旗
                    </a>
            
            
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                            <b>12.8.</b>
                        
                        turtle画小猪佩奇
                    </a>
            
            
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                            <b>12.9.</b>
                        
                        turtle画个表
                    </a>
            
            
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                        <h1 id="&#x9AD8;&#x9636;&#x51FD;&#x6570;">&#x9AD8;&#x9636;&#x51FD;&#x6570;</h1>
<hr>
<h4 id="&#x4E3B;&#x8981;&#x4ECB;&#x7ECD;python&#x7684;4&#x4E2A;&#x5185;&#x7F6E;&#x7684;&#x9AD8;&#x9636;&#x51FD;&#x6570;&#xFF1A;map&#x3001;reduce&#x3001;filter&#x3001;sorted">&#x4E3B;&#x8981;&#x4ECB;&#x7ECD;python&#x7684;4&#x4E2A;&#x5185;&#x7F6E;&#x7684;&#x9AD8;&#x9636;&#x51FD;&#x6570;&#xFF1A;<code>map()</code>&#x3001;<code>reduce()</code>&#x3001;<code>filter()</code>&#x3001;<code>sorted()</code></h4>
<hr>
<h2 id="mapfunc-lsd">map(func, lsd)</h2>
<ul>
<li>func&#xFF1A;&#x53EF;&#x4EE5;&#x662F;&#x4E00;&#x4E2A;python&#x5185;&#x7F6E;&#x51FD;&#x6570;&#xFF0C;&#x4E5F;&#x53EF;&#x4EE5;&#x4F7F;&#x6211;&#x4EEC;&#x7684;&#x81EA;&#x5B9A;&#x4E49;&#x51FD;&#x6570;</li>
<li>lsd&#xFF1A;&#x5FC5;&#x987B;&#x662F;&#x4E00;&#x4E2A;&#x5E8F;&#x5217;&#xFF0C;&#x4E5F;&#x53EF;&#x4EE5;&#x8BF4;&#x662F;&#x4E00;&#x4E2A;&#x5BB9;&#x5668;</li>
<li>&#x4F5C;&#x7528;&#xFF1A;lsd&#x4E2D;&#x7684;&#x5143;&#x7D20;&#x4F1A;&#x4F9D;&#x6B21;&#x4F5C;&#x7528;&#x5728;func&#x4E0A;&#xFF0C;&#x6700;&#x7EC8;&#x8FD4;&#x56DE;&#x4E00;&#x4E2A;&#x8FED;&#x4EE3;&#x5668;</li>
</ul>
<p>&#x6BD4;&#x5982;&#x6211;&#x4EEC;&#x6709;&#x4E00;&#x4E2A;&#x51FD;&#x6570;f(x)=x2&#xFF0C;&#x8981;&#x628A;&#x8FD9;&#x4E2A;&#x51FD;&#x6570;&#x4F5C;&#x7528;&#x5728;&#x4E00;&#x4E2A;list [1, 2, 3, 4, 5, 6, 7, 8, 9]&#x4E0A;&#xFF0C;&#x5C31;&#x53EF;&#x4EE5;&#x7528;map()&#x5B9E;&#x73B0;,&#x5982;&#x4E0B;:</p>
<p><img src="../images/map&#x5B9E;&#x4F8B;.png" alt=""></p>
<pre><code class="lang-py"><span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">func</span><span class="hljs-params">(x)</span>:</span>
    <span class="hljs-keyword">return</span> x * x

res = map(func, [<span class="hljs-number">1</span>, <span class="hljs-number">2</span>, <span class="hljs-number">3</span>, <span class="hljs-number">4</span>, <span class="hljs-number">5</span>, <span class="hljs-number">6</span>, <span class="hljs-number">7</span>, <span class="hljs-number">8</span>, <span class="hljs-number">9</span>])
print(list(res))
</code></pre>
<p><img src="../images/map&#x5B9E;&#x4F8B;1.png" alt=""></p>
<ul>
<li>&#x6CE8;&#x610F;&#xFF1A;map()&#x51FD;&#x6570;&#x5F97;&#x5230;&#x7684;&#x8FD4;&#x56DE;&#x503C;&#x662F;&#x4E00;&#x4E2A;&#x60F0;&#x6027;&#x5E8F;&#x5217;(&#x8FED;&#x4EE3;&#x5668;)&#xFF0C;&#x67E5;&#x770B;&#x65F6;&#x9700;&#x8981;&#x8F6C;&#x6362;&#x6210;&#x5BB9;&#x5668;&#x6216;&#x8005;&#x904D;&#x5386;&#x67E5;&#x770B;</li>
</ul>
<hr>
<h2 id="reducefunc-lsd">reduce(func, lsd)</h2>
<ul>
<li>func&#xFF1A;&#x662F;&#x4E00;&#x4E2A;&#x51FD;&#x6570;&#xFF0C;&#x6B64;&#x51FD;&#x6570;&#x5FC5;&#x987B;&#x8981;&#x6709;&#x4E24;&#x4E2A;&#x53C2;&#x6570;</li>
<li>lsd&#xFF1A;&#x5FC5;&#x987B;&#x662F;&#x4E00;&#x4E2A;&#x5E8F;&#x5217;&#xFF0C;&#x4E5F;&#x53EF;&#x4EE5;&#x8BF4;&#x662F;&#x4E00;&#x4E2A;&#x5BB9;&#x5668;</li>
<li><p>&#x4F5C;&#x7528;&#xFF1A;lsd&#x4E2D;&#x7684;&#x524D;&#x4E24;&#x4E2A;&#x5143;&#x7D20;&#x4F1A;&#x4F5C;&#x7528;&#x5728;func&#x4E0A;&#xFF0C;&#x7136;&#x540E;&#x5C06;&#x5F97;&#x5230;&#x7684;&#x7ED3;&#x679C;&#x518D;&#x548C;&#x7B2C;&#x4E09;&#x4E2A;&#x5143;&#x7D20;&#x6267;&#x884C;func&#xFF0C;&#x4EE5;&#x6B64;&#x7C7B;&#x63A8;&#xFF0C;&#x76F4;&#x5230;lsd&#x4E2D;&#x6CA1;&#x6709;&#x6570;&#x636E;</p>
</li>
<li><p><strong>&#x5B9E;&#x4F8B;</strong></p>
<pre><code class="lang-py">  <span class="hljs-keyword">from</span> functools <span class="hljs-keyword">import</span> reduce

  <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">func</span><span class="hljs-params">(x,y)</span>:</span>
      <span class="hljs-keyword">return</span> x * <span class="hljs-number">10</span> + y

  res = reduce(func, [<span class="hljs-number">1</span>, <span class="hljs-number">2</span>, <span class="hljs-number">3</span>, <span class="hljs-number">4</span>, <span class="hljs-number">5</span>, <span class="hljs-number">6</span>, <span class="hljs-number">7</span>, <span class="hljs-number">8</span>, <span class="hljs-number">9</span>])
  print(res)
</code></pre>
</li>
<li><p><strong>&#x7ED3;&#x679C;</strong></p>
<p>  <img src="../images/reduce&#x5B9E;&#x4F8B;.png" alt=""></p>
</li>
</ul>
<hr>
<h2 id="filterfunc-lsd">filter(func, lsd)</h2>
<ul>
<li>func&#xFF1A;&#x662F;&#x4E00;&#x4E2A;&#x51FD;&#x6570;&#xFF0C;&#x8FD4;&#x56DE;bool&#x503C;</li>
<li>lsd&#xFF1A;&#x5FC5;&#x987B;&#x662F;&#x4E00;&#x4E2A;&#x5E8F;&#x5217;&#xFF0C;&#x4E5F;&#x53EF;&#x4EE5;&#x8BF4;&#x662F;&#x4E00;&#x4E2A;&#x5BB9;&#x5668;</li>
<li><p>&#x4F5C;&#x7528;&#xFF1A;&#x901A;&#x8FC7;&#x51FD;&#x6570;&#x5224;&#x65AD;&#x540E;&#x9762;&#x5E8F;&#x5217;&#x4F5C;&#x7528;&#x5728;&#x524D;&#x9762;&#x51FD;&#x6570;&#x7684;&#x65F6;&#x5019;&#x8FD4;&#x56DE;&#x7684;bool&#x503C;&#xFF0C;&#x5982;&#x679C;&#x4E3A;True&#xFF0C;&#x8FD4;&#x56DE;&#x8FD9;&#x4E2A;&#x6570;&#x503C;&#xFF0C;&#x5982;&#x679C;&#x4E3A;False&#xFF0C;&#x8FC7;&#x6EE4;&#x5230;&#x8FD9;&#x4E2A;&#x6570;&#x503C;&#xFF0C;&#x6700;&#x7EC8;&#x4E5F;&#x662F;&#x8FD4;&#x56DE;&#x4E00;&#x4E2A;<strong>&#x8FED;&#x4EE3;&#x5668;</strong></p>
</li>
<li><p><strong>&#x5B9E;&#x4F8B;&#xFF1A; &#x8FC7;&#x6EE4;&#x6389;0-9&#x4E2D;&#x7684;&#x5947;&#x6570;</strong></p>
<pre><code class="lang-py">  <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">func</span><span class="hljs-params">(num)</span>:</span>
      <span class="hljs-keyword">if</span> num % <span class="hljs-number">2</span> == <span class="hljs-number">0</span>:
          <span class="hljs-keyword">return</span> <span class="hljs-keyword">True</span>
      <span class="hljs-keyword">else</span>:
          <span class="hljs-keyword">return</span> <span class="hljs-keyword">False</span>

  lsd = [<span class="hljs-number">0</span>, <span class="hljs-number">1</span>, <span class="hljs-number">2</span>, <span class="hljs-number">3</span>, <span class="hljs-number">4</span>, <span class="hljs-number">5</span>, <span class="hljs-number">6</span>, <span class="hljs-number">7</span>, <span class="hljs-number">8</span>, <span class="hljs-number">9</span>]

  res = filter(func, lsd)
  print(list(res))
</code></pre>
</li>
<li><p><strong>&#x7ED3;&#x679C;</strong></p>
<p>  <img src="../images/filter&#x5B9E;&#x4F8B;.png" alt=""></p>
</li>
</ul>
<h2 id="sortedlsd">sorted(lsd)</h2>
<ul>
<li>lsd&#xFF1A;&#x5FC5;&#x987B;&#x662F;&#x4E00;&#x4E2A;&#x5E8F;&#x5217;&#xFF0C;&#x4E5F;&#x53EF;&#x4EE5;&#x8BF4;&#x662F;&#x4E00;&#x4E2A;&#x5BB9;&#x5668;</li>
<li><p>&#x4F5C;&#x7528;&#xFF1A;&#x7528;&#x6765;&#x6392;&#x5E8F;&#xFF0C;&#x9ED8;&#x8BA4;&#x5347;&#x5E8F;</p>
</li>
<li><p><strong>&#x5B9E;&#x4F8B;</strong></p>
<pre><code class="lang-py">  lsd = [<span class="hljs-number">5</span>, <span class="hljs-number">1</span>, <span class="hljs-number">3</span>, <span class="hljs-number">4</span>, <span class="hljs-number">6</span>]

  res = sorted(lsd)
  print(res)

  <span class="hljs-comment"># &#x8FD8;&#x6709;&#x5176;&#x4ED6;&#x53C2;&#x6570;&#xFF0C;&#x52A0;&#x4E0A;reverse=True&#xFF1A;&#x5C31;&#x662F;&#x5012;&#x5E8F;&#xFF1B;key=abs&#xFF1A;&#x6309;&#x7EDD;&#x5BF9;&#x503C;&#x6392;&#x5E8F;</span>
  res = sorted(lsd, reverse=<span class="hljs-keyword">True</span>, key=abs)
</code></pre>
</li>
<li><p><strong>&#x7ED3;&#x679C;</strong></p>
<p>  <img src="../images/sorted&#x5B9E;&#x4F8B;.png" alt=""></p>
</li>
</ul>
<hr>
<ul>
<li><h2 id="&#x4F8B;&#x9898;">&#x4F8B;&#x9898;</h2>
</li>
</ul>
<p>&#x6709;&#x5217;&#x8868;[&quot;1&quot;, &quot;4&quot;, &quot;7&quot;, &quot;2&quot;, &quot;3&quot;, &quot;6&quot;, &quot;5&quot;, &quot;8&quot;, &quot;9&quot;]</p>
<ol>
<li><p>&#x6C42;&#x51FA;&#x8FD9;&#x4E2A;&#x5217;&#x8868;&#x7531;&#x6240;&#x6709;&#x5076;&#x6570;&#x7EC4;&#x6210;&#x7684;&#x6700;&#x5927;&#x6574;&#x6570;</p>
<pre><code class="lang-py"> <span class="hljs-keyword">from</span> functools <span class="hljs-keyword">import</span> reduce

 demo_list = [<span class="hljs-string">&quot;1&quot;</span>, <span class="hljs-string">&quot;4&quot;</span>, <span class="hljs-string">&quot;7&quot;</span>, <span class="hljs-string">&quot;2&quot;</span>, <span class="hljs-string">&quot;3&quot;</span>, <span class="hljs-string">&quot;6&quot;</span>, <span class="hljs-string">&quot;5&quot;</span>, <span class="hljs-string">&quot;8&quot;</span>, <span class="hljs-string">&quot;9&quot;</span>]
 demo_dict = {<span class="hljs-string">&quot;0&quot;</span>: <span class="hljs-number">0</span>, <span class="hljs-string">&quot;1&quot;</span>: <span class="hljs-number">1</span>, <span class="hljs-string">&quot;2&quot;</span>: <span class="hljs-number">2</span>, <span class="hljs-string">&quot;3&quot;</span>: <span class="hljs-number">3</span>, <span class="hljs-string">&quot;4&quot;</span>: <span class="hljs-number">4</span>, <span class="hljs-string">&quot;5&quot;</span>: <span class="hljs-number">5</span>, <span class="hljs-string">&quot;6&quot;</span>: <span class="hljs-number">6</span>, <span class="hljs-string">&quot;7&quot;</span>: <span class="hljs-number">7</span>, <span class="hljs-string">&quot;8&quot;</span>: <span class="hljs-number">8</span>, <span class="hljs-string">&quot;9&quot;</span>: <span class="hljs-number">9</span>}

 res1 = reduce(<span class="hljs-keyword">lambda</span> x, y: x*<span class="hljs-number">10</span>+y, filter(<span class="hljs-keyword">lambda</span> x:<span class="hljs-number">1</span> <span class="hljs-keyword">if</span> x%<span class="hljs-number">2</span> == <span class="hljs-number">0</span> <span class="hljs-keyword">else</span> <span class="hljs-number">0</span>, sorted(list(map(<span class="hljs-keyword">lambda</span> x:demo_dict[x], demo_list)), reverse=<span class="hljs-keyword">True</span>)))
 print(res1)
</code></pre>
<p> <img src="../images/&#x9AD8;&#x9636;&#x51FD;&#x6570;&#x4F8B;&#x9898;1.png" alt=""></p>
</li>
<li><p>&#x6C42;&#x51FA;&#x8FD9;&#x4E2A;&#x5217;&#x8868;&#x7531;&#x6240;&#x6709;&#x5947;&#x6570;&#x7EC4;&#x6210;&#x7684;&#x6700;&#x5C0F;&#x6574;&#x6570;</p>
<pre><code class="lang-py"> <span class="hljs-keyword">from</span> functools <span class="hljs-keyword">import</span> reduce

 demo_list = [<span class="hljs-string">&quot;1&quot;</span>, <span class="hljs-string">&quot;4&quot;</span>, <span class="hljs-string">&quot;7&quot;</span>, <span class="hljs-string">&quot;2&quot;</span>, <span class="hljs-string">&quot;3&quot;</span>, <span class="hljs-string">&quot;6&quot;</span>, <span class="hljs-string">&quot;5&quot;</span>, <span class="hljs-string">&quot;8&quot;</span>, <span class="hljs-string">&quot;9&quot;</span>]
 demo_dict = {<span class="hljs-string">&quot;0&quot;</span>: <span class="hljs-number">0</span>, <span class="hljs-string">&quot;1&quot;</span>: <span class="hljs-number">1</span>, <span class="hljs-string">&quot;2&quot;</span>: <span class="hljs-number">2</span>, <span class="hljs-string">&quot;3&quot;</span>: <span class="hljs-number">3</span>, <span class="hljs-string">&quot;4&quot;</span>: <span class="hljs-number">4</span>, <span class="hljs-string">&quot;5&quot;</span>: <span class="hljs-number">5</span>, <span class="hljs-string">&quot;6&quot;</span>: <span class="hljs-number">6</span>, <span class="hljs-string">&quot;7&quot;</span>: <span class="hljs-number">7</span>, <span class="hljs-string">&quot;8&quot;</span>: <span class="hljs-number">8</span>, <span class="hljs-string">&quot;9&quot;</span>: <span class="hljs-number">9</span>}

 res1 = reduce(<span class="hljs-keyword">lambda</span> x, y: x*<span class="hljs-number">10</span>+y, filter(<span class="hljs-keyword">lambda</span> x:<span class="hljs-number">0</span> <span class="hljs-keyword">if</span> x%<span class="hljs-number">2</span> == <span class="hljs-number">0</span> <span class="hljs-keyword">else</span> <span class="hljs-number">1</span>, sorted(list(map(<span class="hljs-keyword">lambda</span> x:demo_dict[x], demo_list)))))
 print(res1)
</code></pre>
<p> <img src="../images/&#x9AD8;&#x9636;&#x51FD;&#x6570;&#x4F8B;&#x9898;2.png" alt=""></p>
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